Highest Common Factor of 645, 930 using Euclid's algorithm
Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
HCF Calculator using the Euclid Division Algorithm helps you to find the Highest common factor (HCF) easily for 645, 930 i.e. 15 the largest integer that leaves a remainder zero for all numbers.
HCF of 645, 930 is 15 the largest number which exactly divides all the numbers i.e. where the remainder is zero. Let us get into the working of this example.
Consider we have numbers 645, 930 and we need to find the HCF of these numbers. To do so, we need to choose the largest integer first and then as per Euclid's Division Lemma a = bq + r where 0 ≤ r ≤ b
Highest common factor (HCF) of 645, 930 is 15.
HCF(645, 930) = 15
HCF of 645, 930 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 645, 930 is 15.
Highest Common Factor of 645,930 is 15
Step 1: Since 930 > 645, we apply the division lemma to 930 and 645, to get
930 = 645 x 1 + 285
Step 2: Since the reminder 645 ≠ 0, we apply division lemma to 285 and 645, to get
645 = 285 x 2 + 75
Step 3: We consider the new divisor 285 and the new remainder 75, and apply the division lemma to get
285 = 75 x 3 + 60
We consider the new divisor 75 and the new remainder 60,and apply the division lemma to get
75 = 60 x 1 + 15
We consider the new divisor 60 and the new remainder 15,and apply the division lemma to get
60 = 15 x 4 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 15, the HCF of 645 and 930 is 15
Notice that 15 = HCF(60,15) = HCF(75,60) = HCF(285,75) = HCF(645,285) = HCF(930,645) .
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Frequently Asked Questions on HCF of 645, 930 using Euclid's Algorithm
1. What is the Euclid division algorithm?
Answer: Euclid's Division Algorithm is a technique to compute the Highest Common Factor (HCF) of given positive integers.
2. what is the HCF of 645, 930?
Answer: HCF of 645, 930 is 15 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 645, 930 using Euclid's Algorithm?
Answer: For arbitrary numbers 645, 930 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.
